Part 86

_Rifled Cannon._--The rifled cannon adopted for the land service of the United States at the present time (1880) are, for the field service a 3- and 3¹⁄₂-inch rifle, having the exterior shape of Rodman guns, but made of wrought iron,--the former adopted in 1861; the 3¹⁄₂-inch gun has never been made--the model was adopted in 1870,--and three mitrailleurs, viz., 1-inch and ¹⁄₂-inch (Gatling), adopted in 1868, and a .45-inch Gatling, adopted in 1874, intended to replace the ¹⁄₂-inch, and to use the service cartridge of the rifle musket. In the siege service there is but one rifle gun properly belonging to the system of the United States, viz., 4¹⁄₂-inch, of casting, having the Rodman shape, but cast solid. The 30-pounder (4.2-inch) Parrott so extensively used is not a regulation gun. (See ORDNANCE, CONSTRUCTION OF.) The weight of the 4¹⁄₂-inch is 3570 pounds. It has an extreme length of 133 inches. The twist is uniform, and the weight of the solid projectile 32¹⁄₂ pounds, and of the charge 3¹⁄₄ pounds. The piece is loaded at the muzzle. The rifled sea-coast guns belonging to the system are a 10- and 12-inch, made of cast iron, and weighing 40,681 and 52,000 pounds respectively. The extreme length of the 10-inch is 180, and of the 12-inch 192 inches; the weight of the solid shot, 292 and 620 pounds respectively; the twist in each is uniform, and both are muzzle-loaders. Such is the official system of the United States. All the large guns are cast iron and are now useless as an armament to cope with modern armed ironclads. We have, however, a number of experimental guns, the models of which must be our immediate reliance in case of foreign war. In making these experimental rifles it has been held in view to utilize as far as possible the cast-iron ordnance now on hand. They are all made of cast-iron cases fitted with internal tubes of wrought iron (steel has also been used) after the plans of Parsons and Palliser. (See ORDNANCE, CONSTRUCTION OF.) The 12¹⁄₄-inch rifle, muzzle-loader, is an original construction, the case required being larger than the 15-inch smooth-bored. The weight of gun is 40 tons; charge, 110 pounds _hexagonal powder_; shot, 700 pounds. The others are converted guns,--the 10-inch rifle, muzzle-loader, converted from 13-inch smooth-bore by inserting wrought-iron tube; two patterns of 8-inch rifle, breech- and muzzle-loaders, converted from 10-inch smooth-bores by muzzle and breech insertion of tubes. Quite a number of the muzzle-loaders have been made and mounted. A similar gun has been made for the naval service by converting the 11-inch Dahlgren. Parrott 100-pounders have also been converted into 6.4-inch breech-loaders for the navy.

Although the Parrott gun does not belong to the system adopted by the United States, it has been much employed for both siege and sea-coast purposes, almost to the exclusion of other rifled cannon. They are also very generally used in the naval service. There are eight of these guns employed in the service of the United States, viz.: a 300-pounder (10-inch), 200-pounder (8-inch), and 100-pounder (6.4-inch), in use by both land and naval forces; a 60-pounder (5.3-inch) and 30-pounder (4.2-inch), used exclusively by the navy, and a 30-pounder (4.2-inch), 20-pounder (3.67-inch), and 10-pounder (3-inch), employed exclusively by the land forces. The Parrott cannon are all muzzle-loading and made of cast iron, reinforced with a wrought-iron jacket. See ORDNANCE, CONSTRUCTION OF.

GREAT BRITAIN.--The cannon employed in the British service are all rifled, and nearly all muzzle-loaders.

_Royal Arsenal, Woolwich._--The guns belonging to the British system, and made at the Royal Arsenal, Woolwich, are: for land service, an 11-inch gun, wrought iron, muzzle-loading, weighing 25 tons; two 7-inch, weighing 7 tons, and differing slightly in length and details of construction; a 16-pounder (3.6-inch), weighing 12 cwt.; and a 9-pounder (3-inch), weighing 8 cwt. These guns are all made of wrought iron. There are also an 8-inch howitzer weighing 46 cwt., also of wrought iron, and two converted guns, viz., a 64-pounder (6.29-inch) converted from 32-pounder, and an 80-pounder converted from 68-pounder smooth-bore. Both of these guns are of cast iron, with wrought-iron tubes, and were converted according to the Palliser method. For the Woolwich 38-ton gun, see ARMSTRONG CANNON. For sea service exclusively, there are made at the Woolwich Arsenal a 12-inch, weighing 35 tons; two 8-inch, weighing 9 tons respectively, of the same length, one having no preponderance, and differing in other details of their construction; two 7-inch, weighing 6.5 tons respectively, differing slightly in length and details; a 7-inch, weighing 4.5 tons; and 9-pounder (3-inch), weighing 6 cwt. These guns are all made of wrought iron, and are muzzle-loading. For both land and sea service, there are made at the Royal Arsenal a 12-inch, weighing 25 tons; a 10-inch, weighing 18 tons; two 9-inch, one of which has no preponderance, the other a preponderance of 5 cwt.; three 64-pounders (6.3-inch), each weighing 64 cwt., but differing in length and construction. These guns are all made of wrought iron; for both services is used a 64-pounder (6.29 inch), converted from 8-inch smooth-bored according to the Palliser method. There are besides two bronze guns, one called the “boat gun,” a 7-pounder (3-inch) weighing 200 pounds; the other a 9-pounder (3-inch), used in the Indian service, and weighing 8 cwt.; also a 7-pounder (3-inch) mountain gun of steel, and weighing 150 pounds; these are all muzzle-loaders. The 9-, 10-, 11-, and 12-inch calibers have all steel tubes; one 7-ton and one 6.5-ton gun have tubes of wrought iron.

_Armstrong Cannon._--The guns used in the British service made by Sir William Armstrong are--for the land service--a 12-inch weighing 38 tons (some of these guns are bored to 12¹⁄₂ inches), an 11-inch weighing 25 tons, a 7-inch weighing 7 tons, a 40-pounder (4.75-inch) weighing 35 cwt., a 25-pounder (4-inch), and a 16-pounder (3.6 inch) weighing 18 and 12 cwt. respectively, a 9-pounder (3-inch) weighing 6 cwt., a 10-inch weighing 6 tons, having no preponderance. These guns are all of wrought iron and muzzle-loading. There are also used in the land service, and of the same make, a 7-pounder (3-inch) muzzle-loading steel gun weighing 150 pounds, an 8-inch muzzle-loading howitzer made of wrought iron and weighing 46 cwt., a 64-pounder (6.29-inch) converted from 32-pounder, and an 80-pounder (6.29-inch) converted by Palliser method from 68-pounder muzzle-loading, made of cast iron with wrought-iron tubes. The other guns manufactured by Sir William Armstrong, and used in the land service, are all breech-loading, viz.: a 7-inch (screw) weighing 72 cwt., a 20-pounder (3.75-inch screw) weighing 16 cwt., a 64-pounder (6.4-inch wedge) weighing 64 cwt., and a Gatling gun (0.45) weighing 3 cwt. 84 pounds. The guns used in the sea service of this make are a 12-inch weighing 35 tons, an 8-inch weighing 9 tons, two 7-inch weighing 6 tons 10 cwt. and 90 cwt. respectively, and a 9-pounder (3-inch) weighing 6 cwt. These are all muzzle-loading, and made of wrought iron. There is another muzzle loading gun used for sea service, viz., a 64-pounder (6.29-inch) converted from 8-inch, and weighing 71 cwt.; this gun is of cast iron with a wrought iron tube. The breech-loaders used for sea service are two 20-pounders (3.75-inch screw) weighing 15 and 13 cwt. respectively, 40-pounder (4.75-inch) wedge weighing 32 cwt., and a Gatling gun (0.65-inch) weighing 7 cwt. 35 pounds; these guns are all of wrought iron. For land and sea service are constructed a 12-inch weighing 25 tons, a 10- and 9-inch weighing 18 and 12 tons respectively, a 64-pounder (6.3-inch) weighing 64 cwt., a 9-pounder (3-inch) weighing 8 cwt., a 7-pounder (3-inch) weighing 200 pounds, and made of steel; the others are of wrought iron, and all are muzzle-loading. The breech-loading guns of this manufacture used in both land and sea service are a 7-inch (screw) weighing 82 cwt., two 40-pounders (4.75-inch) screw weighing 35 and 32 cwt., respectively, a 12-pounder (3-inch), 9-pounder (3-inch), and 6-pounder (2.5-inch) screw weighing 8, 6, and 3 cwt. respectively. They are all made of wrought iron. See ARMSTRONG GUN.

GERMANY.--In Germany the Krupp gun is almost entirely employed; they are all breech-loading and constructed of steel. (For particular construction, see ORDNANCE, CONSTRUCTION OF.) Those used in the German land service are a 28-centimetre howitzer weighing 9.82 tons, caliber in inches 11.023, a long 21-centimetre weighing 9.84 tons, caliber 8.241 inches, a short 21-centimetre weighing 8.84, caliber 8.241 inches, a short 15-centimetre weighing 2.9 tons, caliber 5.869 inches, a 12-, 9-, 8-, and 6-centimetre, whose calibers are 4.735, 3.602, 3.090, and 2.362 inches, and whose weights are 1.37 tons, and 935, 649, and 235 pounds respectively. In the sea service are used a 30¹⁄₂-centimetre weighing 35.3 tons, caliber 12.007 inches, a short 26-centimetre weighing 17.67 tons, caliber 10.236 inches, a long 24-centimetre weighing 14.38 tons, caliber 9.267 inches, and a short 24-centimetre. For both land and sea service are employed a long 17-centimetre weighing 5.5 tons, caliber 6.771 inches, a short 17-centimetre, a long 15-centimetre weighing 3.03 tons, caliber 5.869 inches, and a long 15-centimetre weighing 3.09 tons.

FRANCE.--The guns adopted in the French service are both breech- and muzzle-loading, and are, for the land service, a siege-gun, 24-pounder rifled breech-loading, weighing 40.55 tons, caliber 6.01 inches, for fortress guns a 24- and 12-pounder rifled muzzle-loading, weighing 5953 and 3307 pounds, and having calibers of 6.01 and 4.77 inches respectively. For siege-guns a 24- and 12-pounder rifled weighing 4409 and 1940 pounds, whose respective calibers are 6.01 and 4.77 inches and muzzle-loading. For field artillery a 12-, 8-, and 4-pounder rifled, weighing respectively 1367, 1234.6, and 727.55 pounds, and whose calibers are 4.77, 4.17, and 3.40 inches respectively, all muzzle-loading. There is also a 4-pounder rifled muzzle-loading mountain piece weighing 220.5 pounds, whose caliber is 3.40 inches. In the sea-coast service there are a 30-pounder (muzzle-loader) not hooped, weighing 61 cwt., caliber 6.48 inches, a 30-pounder (muzzle-loader or breech-loader) hooped, weighing 70.86 cwt., caliber 5.46 inches, a howitzer 22-centimetre rifled and hooped, caliber 8.66 inches. In the French sea-service are a 32-centimetre weighing 34.5 tons, caliber 12.599 inches, and a 27-centimetre weighing 21.7 tons, caliber 10.803 inches. Both of these guns are breech-loading. For both land and sea service are used a 24-centimetre weighing 13.8 tons, caliber 9.499 inches, a 19-centimetre weighing 7.9 tons, caliber 7.638 inches, a 16-centimetre weighing 98.42 cwt., caliber 6.484 inches, a 14-centimetre weighing 52.26 cwt., caliber 5.456 inches. The guns used for sea service only, or for both land and sea service, are all made of cast iron, tubed with steel nearly to the trunnions, and strengthened near the breech by steel rings heated and shrunk on. The fortress guns, most of the siege, and all the field-guns are made of bronze. The large breech-loaders use the solid breech-screw _fermeture_. The term “pounder” as applied to certain guns has no reference to the weight of the oblong projectile used, but to the weight of the corresponding spherical solid shot.

RUSSIA.--In the Russian service the Krupp gun is rapidly taking the place of all others; there are, however, still used for sea service, a 12-inch and 6-inch breech-loader weighing 40 tons and 3.92 tons respectively; also a 12.2-pounder boat-gun weighing 792 pounds, and for both land and sea service an 8-inch breech-loader weighing 8.754 tons, and an 8-inch breech-loading mortar, weighing 3.21 tons. These guns are all made of steel.

=Ordnance, Ammunition for.= For convenience in loading and safety in transportation, cannon ammunition is prepared in a peculiar manner and with great care. The ammunition so prepared is classified into field and mountain, siege and sea-coast ammunition.

_Ammunition for Field Service_ is composed of solid shot, shells, spherical case-shot, and canister-shot (see headings). In mountain service solid shot are omitted. A stand of ammunition is composed of the projectile, sabot, straps, cartridge-bag, cylinder, and cap. The projectile is secured by two tin straps, fastened at the ends with tacks driven into the sabot. The straps cross each other at right angles; for solid shot, one strap passing through a slit in the other; for hollow projectiles, both straps are fastened to a tin ring which surrounds the fuze-hole. A round of canister for the field service consists of a tin cylinder filled with cast-iron shot, which slips over the end of the sabot, to which it is secured with small nails. The materials of which cartridge-bags are made are flannel, wildbore, or serge; the fabric should be soft and closely woven, to prevent the powder sifting out. Fabrics of cotton and flax are not used, because the powder sifts through them, and they are more apt to leave fire in the gun than woolen stuffs. A cartridge-bag for the field service is made of two pieces,--a rectangular piece for the sides, and a circular piece for the bottom. The charge is determined by measurement. The cylinder and cap are made of stout paper. The cylinder is used to give stiffness to the cartridge at the junction of the sabot and bag; the cap covers the exposed portion of the bag, is drawn off before loading, and placed over the projectile, or thrown away. The cartridge-bag is attached to the projectile by tying it around the grooves of the sabot with twine.

_Fixed Ammunition._--Ammunition thus prepared is called fixed ammunition. It is used in the field and mountain service for smooth-bore guns and howitzers. For rifled guns the bag and projectile are carried separately. The term _strapped ammunition_ is applied when the projectile is attached to a sabot without grooves; and to give a proper form to the cartridge-bag, the mouth is closed with a cartridge-block, which resembles a sabot; hence the name strapped ammunition. This kind of cartridge is nearly obsolete.

_Packing, etc._--As soon as ammunition is finished it should be gauged, to see that it is of the proper caliber; it is afterwards packed in boxes containing 10 rounds each.

_Siege and Sea-coast Ammunition._--On account of the great weight of siege and sea-coast ammunition, the cartridge-bag and projectile are carried separately. The cartridge-bags for large charges of powder are made of two pieces of woolen stuff, or of a paper tube with a woolen cloth bottom. The former are preferred for rapid firing. For sea-coast howitzers the bag should fill the chamber; if the piece be fired with a reduced charge, a cartridge-block should be inserted into the bag to give it proper size. For mortars the bag is only used to carry the powder, and when the piece is loaded, the powder is poured into the chamber; bags of any suitable size will answer for this service. For hot-shot cartridges bags are made double, by putting one bag within another. Care should be taken to see that the bags are free from holes. For ricochet firing, or other occasions when very small charges are required, a cartridge-bag of inferior caliber may be used. In the siege and sea-coast services, solid shot are transported and loaded loosely, but hollow projectiles are strapped to sabots, to prevent the fuze from coming in contact with the powder of the charge. The sabots are made from thick plank, and the straps are fastened as in the field service.

=Ordnance, Carriages for.= The carriages for cannon may be classified from their use into field, mountain, prairie, and sea-coast carriages, and mortar-beds. (See particular headings.) They may be further divided into those required for the immediate service and transportation of cannon, as gun-carriages and mortar-beds, and those employed for the transportation of ammunition, implements and materials for repairs, as caissons, mortar-wagons, forges, and battery-wagons. The field-, mountain-, prairie-, and siege-carriages being required for the transportation of their pieces are similar in their construction; those for sea-coast purposes differ materially from the others.

_Nomenclature of Artillery Carriage._--The principal parts of the field-carriage and of all artillery carriages, other than the sea-coast, are: stock, of squared wood in two pieces, which serves to connect the gun-carriage with the limber, and to direct the piece; it includes the head, to which the sponge-bucket ring is attached; groove, trail, or curved part of the stock, which rest on the ground when the piece is unlimbered; rounding of the trail, trail-plate, a piece of iron fastened to the end of the trail and terminated by a very strong ring, called the lunette, which receives the pintle-hook by which the limber is attached; pointing-rings, large and small, which receive the hand-spike; trail-handles, on each side of the stock for the purpose of raising it; prolonge-hooks, on which the prolonge is coiled; wheel-guard plates, lock-chain, used to keep the wheel from turning; it is on the side of the carriage, and has an eye-plate and bolt; sponge and rammer stop, sponge-chain and hasp, ear-plate for sponge-chain and hasp; ear-plate to support worm; key-chain and key; elevating-screw; the latter has a handle with four prongs; elevating-screw box, elevating-screw bed, rondelles, which connect cheeks and stock; cheeks, two pieces of wood between which the gun rests; washer-hooks for handspike, washer-hook for lock-chain, under-strap, right sponge-hook, sponge and worm-hook, handspike-rings, trunnion-plates, into the beds or depressions of which the trunnions fit; cap-squares, cap-square chain, key-chain and key. Axle, including axle-body, of wood; axle-tree, of iron, axle-arm, the rounded extremities of the axle-tree on which the wheels revolve; linch-pin, linch-pin washer and hook. Wheels; each includes nave, nave-bands, nave-box, spokes, felloes, tire. In the new model for field service, cannoneers’ seats are on the axle between the cheeks and wheels; each consists of an iron chair supported on a rectangular bar inserted in a vertical iron socket, and resting on a strong steel spring; the socket is supported by two brass braces fastened to the axle by axle-straps; to an iron cross-piece at the top of the socket are attached two iron braces, which help to support the iron foot-rest attached to the brass braces. The chair has arms and faces to the trail. This refers to the carriage proper, considered only in relation to the fire of the piece, or as a two-wheeled carriage. To suit it to the easy and rapid transportation of its load it must be converted into a four-wheeled carriage, which is done by attaching it to another two-wheeled carriage called a limber.

The _limber_ consists of a similar axle-body, axle, and two wheels, and on these rests a frame-work, to receive the tongue. On top of the whole is an ammunition-box, the top of which forms a seat for three cannoneers. In rear of the axle-tree is a pintle-hook to receive the lunette of the trail. Connected with the frame-work in front is a fixed splinter-bar with four hooks, to which are attached the traces of the wheel horses. At the extremity of the tongue are placed two pole-chains, by which the tongue or pole is held up, and a pole-yoke with two movable branches, to prevent, as much as possible, the pole from oscillating and striking the horses. The principal parts of a field-limber are: pole, including pole-pad; pole-straps, by which the pole is guided when the team is hitched; pole-strap iron, pole-yoke, muff and collar, pole-yoke branches, to which are attached sliding-rings; splinter-bar, to which the horses are hitched by four trace-hooks; end-bands, middle-bands, pole-prop, including socket, ferrule, and chain; hounds, pieces of wood upon which the chests rest, connecting the axle-body with the splinter-bar; forks, pieces of wood between the hounds, forming an opening in which the pole is placed; fork-strap, foot-boards, foot-board brackets, chest, chest-handles, cover, of wood; cover-plate, of copper; turnbuckle, hasp, back-stay, front-stay, stay-pins, stay-pin keys, under strap, pintle-hook, on rear part of axle-tree, which attaches the limber to the carriage; pintle-hook key, axle, wheels. The field-carriages employed in the U. S. service are three, one for the 3-inch rifle carriage (which, with slight modifications, is adapted to the 1-inch mitrailleur), one for the 12-pounder, and one for the ¹⁄₂-inch and .45-inch mitrailleur. The corresponding parts of these carriages differ only in their dimensions. All limbers are similar.

_Mountain-Carriage._--The mountain-carriage differs in construction from the field-carriage inasmuch as the stocks and cheeks are formed of the same piece by hollowing out the head of the stock, the wheels are smaller and the axle-tree is made of wood, the arms being protected from wear by skeans. It is arranged for draught by attaching a pair of shafts to the trail. The pack-saddle and its harness are constructed to carry severally the howitzer and shafts, the carriage, or two ammunition-chests; or it enables an animal to draw the carriage with the howitzer mounted upon it.

_Prairie-Carriage._--The prairie-carriage is designed to carry the mountain howitzer, and is similar to the mountain-carriage in form; but being exclusively for draught, the axle-tree is of iron, and the wheels are made higher and the distance between them greater than in the mountain-carriage. It has a limber and is drawn by two horses abreast, as in field-carriages. The ammunition is packed in mountain ammunition-chests, two of which are carried on the limber.

_Siege-Carriages._--There are three different kinds of siege-carriages used in the U. S. service, one for the 4¹⁄₂-inch rifle, another on which the 30-pounder Parrott is mounted, and a third for the 8-inch howitzer, being the old 12-pounder, 18-pounder, and 24-pounder siege-carriages modified; these are all constructed in the same manner, and differ only in their dimensions. Siege-carriages are similar to the field-carriage in construction (see FIELD-CARRIAGE), the principal difference being in the manner in which they are joined to the limbers. Projecting upwards from the limber and in rear of the axle-tree is placed a pintle, which enters a hole made in the trail from the under side, and a lashing chain and hook keep the two parts together when once in position; the weight of the stock bearing on the rear of the limber relieves the horses of the weight of the pole, which is long and heavy. On the upper surface of the cheeks near the rear ends are placed two projecting bolts, which with the curve of the cheeks form resting-places for the trunnions, when the piece is in position for transportation. They are called traveling trunnion-beds. When the piece is in this position the breech rests upon the bolster, which is a curved block of wood bolted to the upper side of the stock.